Physics 1
What is irreversibility?
Once two object reach termal equilibrium, they will not return to their previous temperatures by themselves.
What is second low of termodynamics?
One simple statement of the law is that heat always moves from hotter objects to colder objects (or "downhill"), unless energy is supplied to reverse the direction of heat flow
What is first low termodynamics?
It distinguishes in principle two forms of energy transfer, heat and thermodynamic work for a system of a constant amount of matter.
How many rules are there in the second law?
1 Heat can flow from colder object towards hotter objects by ıtself.
2 No heat machine can convert all heat into useful work.
What is first low of termo formula?
ΔU =Q – W
One example about real life the first low of termo?
The electrical energy is converted into mechanical energy of a fan.
One example and real life example about second low of termo?
When we put an ice cube in a cup with water at room temperature. The water releases off heat and the ice cube melts. Hence, the entropy of water decreases.